package com.ds.common.org.expression.person;

import java.util.List;
import java.util.Stack;

import com.ds.common.expression.ParseException;
import com.ds.common.expression.function.Function;
import com.ds.org.Org;
import com.ds.org.Person;

 /** 
 * <p>Title: JDSORG组织机构中间件</p>
 * <p>Description:
 * 3.1.28.	判断某个人是否在某个组织内<br>
   Boolean IsPersonInOrg(Person person, Org org)<br>
   参数： person - 指定的人员<br>
          org - 指定的组织<br>
   返回值：如果此人员在指定的组织内返回True，否则返回False<br>
 </p>
 * <p>Copyright: jds Copyright (c) 2003-2008</p>
 * <p>Company: www.justdos.net</p>
 * @author wenzhangli
 * @version 2.0
 */
public class IsPersonInOrg extends Function {
	public IsPersonInOrg() {
		numberOfParameters = 2;
	}

	public void run(Stack stack) throws ParseException
	{
		checkStack(stack); // check the stack
		Object param2 = stack.pop();
		Object param1 = stack.pop();
		stack.push(perform(param1, param2));
	}

	protected Boolean perform(Object param1, Object param2) throws ParseException {
		if (param1 == null || param2 == null) {
			return Boolean.FALSE;
		}
		if (param1 instanceof Person && param2 instanceof Org) {
			Person person = (Person)param1;
			Org org = (Org)param2;
			String personId = person.getID();
			if(personId == null) {
			    return Boolean.FALSE;
			}
			List<Person> personList = org.getPersonList();
			for(Person cperson:personList) {
			    if(personId.equalsIgnoreCase(cperson.getID())) {
			        return Boolean.TRUE;
			    }
			}
			return Boolean.FALSE;
		}
		throw new ParseException("Invalid parameter type in:" + this.getClass().getName() + ", param1 is " + param1.getClass().getName() + ", param2 is " + param2.getClass().getName());
	}
}
